Monitoring Hazard of Drought in Indramayu

Abstract

The drought as a natural event and attacked slowly. Drought as a natural event and attacked slowly, has caused harm to the farmers in the district Indramayu. In vew of the drought is an event that can be repeated, it is necessary to monitor and identify factors associated risk of drought, so as to develop a model of the hazard of drought. Besides, it should be made maps to be known distribution of drought useful for the development of agriculture and other policies, as well as to minimize losses that may in the future. This research used a method to identify factors associated risk of drought and develop models of drought. Each factor was scored and weighted in order of importance or influence on the risk of drought and then overlay is connected through the MCE method (Multi Criteria Evaluation). The model is applied to three (3) points in that 2003, 2008 and 2012. The model is built for two versions. Model version 1, implementaed by excluding the distance from the irrigation network and model version 2, include a range of irrigation networks. The results showed that the drought hazard factor that has the most impact to the lowest is the rainfall, land use, distance to water sources, soil texture, soil surface temperature, in order to obtain a model with the formulation: H=(0.34SPI)+(0.20L)+ (0.19B)+(0.17Jt)+(0.10LST). The spread of the hazard on the model version 2 has an area at risk of drought less than the model version 1 and version 2 have a value lower accuracy than version 1. Model version 2 is an ideal condition, however, irrigation is less a role during the dry season. Meanwhile, the model version 1 has a significant level of validation. Version 1 is a condition close to the real situation on the ground.

Keywords: Drought, hazard, land surface temperature, multi criteria evaluation, Standar Presipitation Index